Based on how thoroughly Quantum Miss dominated open company maiden special weight company, she looks like a huge threat when she faces 11 Pennsylvania&#45;bred foes in Wednesday night&rsquo;s $75,000 Blue Mountain Juvenile for 2&#45;year&#45;old fillies at Penn National.The six&#45;furlong Juvenile goes as race 5 on a nine&#45;race card that begins at 6:30 p.m. Eastern.Based at Parx Racing with trainer Tony Dutrow, Quantum Miss finished third in her career debut against statebred maidens in September, but improved dramatically in her second start six weeks later, when she dueled up front for a half&#45;mile, then pulled away to a 5 1/2&#45;length win as the 6&#45;5 favorite in a 5 1/2&#45;furlong maiden race at Parx on Oct. 29. The 74 Beyer Speed Figure she earned is 16 points better than the next best last&#45;out number in Wednesday&rsquo;s field.Quantah County, the dam of Quantum Miss, was an above average runner as a 2&#45;year&#45;old, finishing second in the $100,000 Moccasin at Hollywood Park and second in a minor stakes at Bay Meadows.Dutrow shows a 7&#45;for&#45;17 record (41 percent) with 2&#45;year&#45;old last&#45;out maiden winners, including 2 wins and 3 seconds in 5 stakes.If Quantum Miss regresses after her 21&#45;point Beyer Figure improvement, the Finger Lakes&#45;based Interrogate and the well&#45;traveled Winking Star are the most likely win candidates.Interrogate, second in the $100,000 Presque Isle Debutante in September, most recently missed by a neck in a first&#45;level allowance restricted to Pa&#45;breds at Parx. Trained by Michael Ferraro, Interrogate has not been worse than third in five career starts.Winking Star, trained by William Connelly, has already raced at Churchill Downs, Presque Isle, Hoosier Park, and Mountaineer in a five&#45;race career. She is the lone two&#45;time winner in the Juvenile field and comes off a 6 1/4&#45;length score against open company in a nonwinners&#45;of&#45;two allowance at Mountaineer.The maiden Mean Reversion and locally based Motherload Hipster are intriguing longshots. Mean Reversion, who has been training at Belmont Park, recently worked a best&#45;of&#45;39 bullet by breezing four furlongs in 47.40 seconds for high&#45;percentage trainer John Terranova. Motherload Hipster returns to her home track, where she won her career debut in August, after a dull showing in the Maryland Million Lassie.